PREFACE TO THE SECOND 

 EDITION. 



THAT a new edition of this work is called for one 

 year after the appearance of the first edition is gratify- 

 ing evidence of widespread interest in the subject of 

 milk hygiene. 



A few corrections and changes have been made in 

 the text and new matter has been added to give in detail 

 what may be regarded as the official method for the 

 examination of milk for bacteria and cells. 



L.P. 



3.387! 



pro 



